In today’s blogpost we will discuss how the interworking architecture of the new 5G system with the existing LTE systems looks like. Inter-working between 4G and 5G will play a very important role in the early deployment of 5G system, which will rely on LTE to be the anchor or underlying system. In the standalone (SA) deployment of 5G, good inter-working with the LTE system to facilitate inter-RAT mobility between the two RATs will be required.

The 5G System (5GS) will have three main components as defined below: 5G Access Network (5G-AN) 5G Core Network (5GC) Use Equipment (UE) This blog is dedicated to describing the main components of the 5G Core Network as defined by the ongoing efforts at 3GPP SA [1]. The 5G system is being designed to support […]

  This article presents the currently ongoing activities in the area of 5G research under the umbrella of Horizon-2020 EU-funded projects. It is the second part of the “research activities in Europe“, following the previous article focused on FP7 projects, namely Towards 5G – research activities in Europe (part 1 – FP7 projects).   Overview of the 5G […]

    According to the latest 3GPP approach, “5G will be delivered” in two phases: Phase I (to be completed by H2 2018, within Rel-15), in which 5G RAT will be provided as an add-on tightly integrated with evolved-LTE; Phase II (to be completed by December 2019, within Rel-16), with 5G RAT provided as a […]

This time I’d like to sketch the current LTE mobile network architecture. After the basic introduction of nodes and interfaces in-between them I’ll underline the most important aspects in terms of network design. The design issues are discussed in the context of radio interface and the IP-based interfaces within RAN and CN.   LTE network architecture […]